Handoff lanes for Factory and Bot tasks
Lead: Hand-off lanes are built and in two open PRs: ai #898 (app) and platform #1971 (docs). They are not merged. The Factory team view opens on Lanes. The bot Tasks tab shows subagent lanes. The system drawer's Bots tab has a Lanes view.
Desktop, light (fixture data)

Phone (fixture data)

What shipped
| Place | What it does |
|---|---|
| Factory team view | Opens on Lanes. Graph and List are switches. Phone shows Lanes and List. |
| Node card | Shows intent, files, proof and deliveries. Has Open node and Take over. |
| Take over | Shows for a running Terminal pane. Opens Code mode on that pane. Does not pause the bot. |
| Bot Tasks tab | Lanes above the steps, only when the thread used subagents |
| System drawer, Bots | New Lanes view beside List and Graph |
| Docs | factory/agents Hand-off lanes, bot-threads, system-drawer, desktop, release note |
| Dependency map | Entry updated. Fixed the validate failure that was already on main. |